Claims
- 1. A method for reducing inorganic impurities in sodium carbonate solution comprising contacting spent carbon with a sodium carbonate solution wherein the inorganic impurities are reduced.
- 2. A method according to claim 1 wherein contact occurs by passing said solution through a spent carbon bed.
- 3. A method according to claim 2 wherein calcium ions, salts and particles; magnesium ions, salts and particles; or combination thereof are reduced.
- 4. A method according to claim 1 wherein said sodium carbonate is selected from the group consisting of: sodium carbonate, sodium bicarbonate, sodium sesquicarbonate, and mixtures thereof.
- 5. A process comprising contacting sodium carbonate solution with spent carbon by passing said solution through a spent carbon bed wherein inorganic impurities are reduced.
- 6. A process according to claim 5 wherein said sodium carbonate solution is selected from the group consisting of: sodium carbonate solutions, sodium bicarbonate solutions, sodium sesquicarbonate solutions, and mixtures thereof.
- 7. A process for removing inorganic impurities from a member of the group consisting of sodium carbonate solution, sodium bicarbonate solution, sodium sesquicarbonate solution, and mixtures thereof comprising the step of: passing said member through a bed of carbon wherein said carbon is saturated with organics and wherein inorganic impurities are removed.
Parent Case Info
This application is a continuation of application No. 08/536,564, filed Sep. 29, 1995, now abandoned.
US Referenced Citations (15)
Continuations (1)
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Number |
Date |
Country |
Parent |
536564 |
Sep 1995 |
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